Chemistry•Hard

Reaction Kinetics

Chemistry challenge: Reaction kinetics studies how fast chemical reactions occur and what factors control the rate.

Scenario

For the reaction A + B → C, experimental data gives: doubling [A] doubles the rate; doubling [B] quadruples the rate. Determine the rate law and rate constant.

Scored questions

Question 1

Doubling [A] doubles the rate. What is the order with respect to A?

0 (zero order)1 (first order)2 (second order)3 (third order)

Question 2

Doubling [B] quadruples the rate. What is the order with respect to B?

0123

Question 3

The overall order of the reaction (m + n) is:

Question 4

If Rate = 0.04 mol/L·s when [A] = 0.2 M and [B] = 0.1 M, what is k? (Rate = k[A][B]²)

L²·mol⁻²·s⁻¹

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